448 lines
22 KiB
Java
448 lines
22 KiB
Java
/*
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* Copyright (c) 2020, 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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/*
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* @test
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* @enablePreview
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* @run testng/othervm TestSegmentAllocators
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*/
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import java.lang.foreign.*;
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import org.testng.annotations.*;
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import java.lang.invoke.VarHandle;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.nio.CharBuffer;
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import java.nio.DoubleBuffer;
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import java.nio.FloatBuffer;
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import java.nio.IntBuffer;
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import java.nio.LongBuffer;
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import java.nio.ShortBuffer;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.function.BiFunction;
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import java.util.function.Function;
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import java.util.stream.IntStream;
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import java.util.stream.LongStream;
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import static org.testng.Assert.*;
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public class TestSegmentAllocators {
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final static int ELEMS = 128;
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final static Class<?> ADDRESS_CARRIER = ValueLayout.ADDRESS.bitSize() == 64 ? long.class : int.class;
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@Test(dataProvider = "scalarAllocations")
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@SuppressWarnings("unchecked")
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public <Z, L extends ValueLayout> void testAllocation(Z value, AllocationFactory allocationFactory, L layout, AllocationFunction<Z, L> allocationFunction, Function<MemoryLayout, VarHandle> handleFactory) {
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layout = (L)layout.withBitAlignment(layout.bitSize());
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L[] layouts = (L[])new ValueLayout[] {
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layout,
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layout.withBitAlignment(layout.bitAlignment() * 2),
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layout.withBitAlignment(layout.bitAlignment() * 4),
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layout.withBitAlignment(layout.bitAlignment() * 8)
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};
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for (L alignedLayout : layouts) {
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List<MemorySegment> addressList = new ArrayList<>();
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int elems = ELEMS / ((int)alignedLayout.byteAlignment() / (int)layout.byteAlignment());
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MemorySession[] sessions = {
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MemorySession.openConfined(),
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MemorySession.openShared()
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};
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for (MemorySession session : sessions) {
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try (session) {
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SegmentAllocator allocator = allocationFactory.allocator(alignedLayout.byteSize() * ELEMS, session);
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for (int i = 0; i < elems; i++) {
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MemorySegment address = allocationFunction.allocate(allocator, alignedLayout, value);
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assertEquals(address.byteSize(), alignedLayout.byteSize());
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addressList.add(address);
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VarHandle handle = handleFactory.apply(alignedLayout);
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assertEquals(value, handle.get(address));
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}
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boolean isBound = allocationFactory.isBound();
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try {
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allocationFunction.allocate(allocator, alignedLayout, value);
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assertFalse(isBound);
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} catch (OutOfMemoryError ex) {
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//failure is expected if bound
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assertTrue(isBound);
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}
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}
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if (allocationFactory != AllocationFactory.IMPLICIT_ALLOCATOR) {
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// addresses should be invalid now
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for (MemorySegment address : addressList) {
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assertFalse(address.session().isAlive());
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}
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}
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}
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}
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}
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static final int SIZE_256M = 1024 * 1024 * 256;
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@Test
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public void testBigAllocationInUnboundedSession() {
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try (MemorySession session = MemorySession.openConfined()) {
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SegmentAllocator allocator = SegmentAllocator.newNativeArena(session);
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for (int i = 8 ; i < SIZE_256M ; i *= 8) {
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MemorySegment address = allocator.allocate(i, i);
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//check size
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assertEquals(address.byteSize(), i);
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//check alignment
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assertEquals(address.address().toRawLongValue() % i, 0);
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}
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}
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}
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@Test
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public void testTooBigForBoundedArena() {
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try (MemorySession session = MemorySession.openConfined()) {
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SegmentAllocator allocator = SegmentAllocator.newNativeArena(10, session);
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assertThrows(OutOfMemoryError.class, () -> allocator.allocate(12));
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allocator.allocate(5); // ok
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}
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}
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@Test
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public void testBiggerThanBlockForBoundedArena() {
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try (MemorySession session = MemorySession.openConfined()) {
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SegmentAllocator allocator = SegmentAllocator.newNativeArena(4 * 1024 * 2, session);
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allocator.allocate(4 * 1024 + 1); // should be ok
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}
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}
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@Test(expectedExceptions = IllegalArgumentException.class)
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public void testBadUnboundedArenaSize() {
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SegmentAllocator.newNativeArena( -1, MemorySession.global());
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}
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@Test(dataProvider = "arrayAllocations")
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public <Z> void testArray(AllocationFactory allocationFactory, ValueLayout layout, AllocationFunction<Object, ValueLayout> allocationFunction, ToArrayHelper<Z> arrayHelper) {
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Z arr = arrayHelper.array();
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MemorySession[] sessions = {
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MemorySession.openConfined(),
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MemorySession.openShared()
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};
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for (MemorySession session : sessions) {
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try (session) {
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SegmentAllocator allocator = allocationFactory.allocator(100, session);
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MemorySegment address = allocationFunction.allocate(allocator, layout, arr);
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Z found = arrayHelper.toArray(address, layout);
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assertEquals(found, arr);
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}
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}
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}
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@DataProvider(name = "scalarAllocations")
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static Object[][] scalarAllocations() {
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List<Object[]> scalarAllocations = new ArrayList<>();
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for (AllocationFactory factory : AllocationFactory.values()) {
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scalarAllocations.add(new Object[] { (byte)42, factory, ValueLayout.JAVA_BYTE,
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(AllocationFunction.OfByte) SegmentAllocator::allocate,
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(Function<MemoryLayout, VarHandle>)l -> l.varHandle() });
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scalarAllocations.add(new Object[] { (short)42, factory, ValueLayout.JAVA_SHORT.withOrder(ByteOrder.BIG_ENDIAN),
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(AllocationFunction.OfShort) SegmentAllocator::allocate,
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(Function<MemoryLayout, VarHandle>)l -> l.varHandle() });
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scalarAllocations.add(new Object[] { (char)42, factory, ValueLayout.JAVA_CHAR.withOrder(ByteOrder.BIG_ENDIAN),
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(AllocationFunction.OfChar) SegmentAllocator::allocate,
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(Function<MemoryLayout, VarHandle>)l -> l.varHandle() });
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scalarAllocations.add(new Object[] { 42, factory,
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ValueLayout.JAVA_INT.withOrder(ByteOrder.BIG_ENDIAN),
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(AllocationFunction.OfInt) SegmentAllocator::allocate,
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(Function<MemoryLayout, VarHandle>)l -> l.varHandle() });
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scalarAllocations.add(new Object[] { 42f, factory, ValueLayout.JAVA_FLOAT.withOrder(ByteOrder.BIG_ENDIAN),
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(AllocationFunction.OfFloat) SegmentAllocator::allocate,
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(Function<MemoryLayout, VarHandle>)l -> l.varHandle() });
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scalarAllocations.add(new Object[] { 42L, factory, ValueLayout.JAVA_LONG.withOrder(ByteOrder.BIG_ENDIAN),
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(AllocationFunction.OfLong) SegmentAllocator::allocate,
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(Function<MemoryLayout, VarHandle>)l -> l.varHandle() });
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scalarAllocations.add(new Object[] { 42d, factory, ValueLayout.JAVA_DOUBLE.withOrder(ByteOrder.BIG_ENDIAN),
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(AllocationFunction.OfDouble) SegmentAllocator::allocate,
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(Function<MemoryLayout, VarHandle>)l -> l.varHandle() });
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scalarAllocations.add(new Object[] { MemoryAddress.ofLong(42), factory, ValueLayout.ADDRESS.withOrder(ByteOrder.BIG_ENDIAN),
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(AllocationFunction.OfAddress) SegmentAllocator::allocate,
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(Function<MemoryLayout, VarHandle>)l -> l.varHandle() });
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scalarAllocations.add(new Object[] { (short)42, factory, ValueLayout.JAVA_SHORT.withOrder(ByteOrder.LITTLE_ENDIAN),
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(AllocationFunction.OfShort) SegmentAllocator::allocate,
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(Function<MemoryLayout, VarHandle>)l -> l.varHandle() });
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scalarAllocations.add(new Object[] { (char)42, factory, ValueLayout.JAVA_CHAR.withOrder(ByteOrder.LITTLE_ENDIAN),
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(AllocationFunction.OfChar) SegmentAllocator::allocate,
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(Function<MemoryLayout, VarHandle>)l -> l.varHandle() });
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scalarAllocations.add(new Object[] { 42, factory,
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ValueLayout.JAVA_INT.withOrder(ByteOrder.LITTLE_ENDIAN),
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(AllocationFunction.OfInt) SegmentAllocator::allocate,
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(Function<MemoryLayout, VarHandle>)l -> l.varHandle() });
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scalarAllocations.add(new Object[] { 42f, factory, ValueLayout.JAVA_FLOAT.withOrder(ByteOrder.LITTLE_ENDIAN),
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(AllocationFunction.OfFloat) SegmentAllocator::allocate,
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(Function<MemoryLayout, VarHandle>)l -> l.varHandle() });
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scalarAllocations.add(new Object[] { 42L, factory, ValueLayout.JAVA_LONG.withOrder(ByteOrder.LITTLE_ENDIAN),
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(AllocationFunction.OfLong) SegmentAllocator::allocate,
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(Function<MemoryLayout, VarHandle>)l -> l.varHandle() });
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scalarAllocations.add(new Object[] { 42d, factory, ValueLayout.JAVA_DOUBLE.withOrder(ByteOrder.LITTLE_ENDIAN),
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(AllocationFunction.OfDouble) SegmentAllocator::allocate,
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(Function<MemoryLayout, VarHandle>)l -> l.varHandle() });
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scalarAllocations.add(new Object[] { MemoryAddress.ofLong(42), factory, ValueLayout.ADDRESS.withOrder(ByteOrder.BIG_ENDIAN),
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(AllocationFunction.OfAddress) SegmentAllocator::allocate,
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(Function<MemoryLayout, VarHandle>)l -> l.varHandle() });
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}
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return scalarAllocations.toArray(Object[][]::new);
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}
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@DataProvider(name = "arrayAllocations")
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static Object[][] arrayAllocations() {
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List<Object[]> arrayAllocations = new ArrayList<>();
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for (AllocationFactory factory : AllocationFactory.values()) {
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arrayAllocations.add(new Object[] { factory, ValueLayout.JAVA_BYTE,
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(AllocationFunction.OfByteArray) SegmentAllocator::allocateArray,
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ToArrayHelper.toByteArray });
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arrayAllocations.add(new Object[] { factory, ValueLayout.JAVA_CHAR.withOrder(ByteOrder.LITTLE_ENDIAN),
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(AllocationFunction.OfCharArray) SegmentAllocator::allocateArray,
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ToArrayHelper.toCharArray });
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arrayAllocations.add(new Object[] { factory, ValueLayout.JAVA_SHORT.withOrder(ByteOrder.LITTLE_ENDIAN),
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(AllocationFunction.OfShortArray) SegmentAllocator::allocateArray,
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ToArrayHelper.toShortArray });
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arrayAllocations.add(new Object[] { factory,
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ValueLayout.JAVA_INT.withOrder(ByteOrder.LITTLE_ENDIAN),
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(AllocationFunction.OfIntArray) SegmentAllocator::allocateArray,
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ToArrayHelper.toIntArray });
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arrayAllocations.add(new Object[] { factory, ValueLayout.JAVA_FLOAT.withOrder(ByteOrder.LITTLE_ENDIAN),
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(AllocationFunction.OfFloatArray) SegmentAllocator::allocateArray,
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ToArrayHelper.toFloatArray });
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arrayAllocations.add(new Object[] { factory, ValueLayout.JAVA_LONG.withOrder(ByteOrder.LITTLE_ENDIAN),
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(AllocationFunction.OfLongArray) SegmentAllocator::allocateArray,
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ToArrayHelper.toLongArray });
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arrayAllocations.add(new Object[] { factory, ValueLayout.JAVA_DOUBLE.withOrder(ByteOrder.LITTLE_ENDIAN),
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(AllocationFunction.OfDoubleArray) SegmentAllocator::allocateArray,
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ToArrayHelper.toDoubleArray });
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arrayAllocations.add(new Object[] { factory, ValueLayout.JAVA_CHAR.withOrder(ByteOrder.BIG_ENDIAN),
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(AllocationFunction.OfCharArray) SegmentAllocator::allocateArray,
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ToArrayHelper.toCharArray });
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arrayAllocations.add(new Object[] { factory, ValueLayout.JAVA_SHORT.withOrder(ByteOrder.BIG_ENDIAN),
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(AllocationFunction.OfShortArray) SegmentAllocator::allocateArray,
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ToArrayHelper.toShortArray });
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arrayAllocations.add(new Object[] { factory,
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ValueLayout.JAVA_INT.withOrder(ByteOrder.BIG_ENDIAN),
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(AllocationFunction.OfIntArray) SegmentAllocator::allocateArray,
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ToArrayHelper.toIntArray });
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arrayAllocations.add(new Object[] { factory, ValueLayout.JAVA_FLOAT.withOrder(ByteOrder.BIG_ENDIAN),
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(AllocationFunction.OfFloatArray) SegmentAllocator::allocateArray,
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ToArrayHelper.toFloatArray });
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arrayAllocations.add(new Object[] { factory, ValueLayout.JAVA_LONG.withOrder(ByteOrder.BIG_ENDIAN),
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(AllocationFunction.OfLongArray) SegmentAllocator::allocateArray,
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ToArrayHelper.toLongArray });
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arrayAllocations.add(new Object[] { factory, ValueLayout.JAVA_DOUBLE.withOrder(ByteOrder.BIG_ENDIAN),
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(AllocationFunction.OfDoubleArray) SegmentAllocator::allocateArray,
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ToArrayHelper.toDoubleArray });
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};
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return arrayAllocations.toArray(Object[][]::new);
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}
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interface AllocationFunction<X, L extends ValueLayout> {
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MemorySegment allocate(SegmentAllocator allocator, L layout, X value);
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interface OfByte extends AllocationFunction<Byte, ValueLayout.OfByte> { }
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interface OfBoolean extends AllocationFunction<Boolean, ValueLayout.OfBoolean> { }
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interface OfChar extends AllocationFunction<Character, ValueLayout.OfChar> { }
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interface OfShort extends AllocationFunction<Short, ValueLayout.OfShort> { }
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interface OfInt extends AllocationFunction<Integer, ValueLayout.OfInt> { }
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interface OfFloat extends AllocationFunction<Float, ValueLayout.OfFloat> { }
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interface OfLong extends AllocationFunction<Long, ValueLayout.OfLong> { }
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interface OfDouble extends AllocationFunction<Double, ValueLayout.OfDouble> { }
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interface OfAddress extends AllocationFunction<MemoryAddress, ValueLayout.OfAddress> { }
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interface OfByteArray extends AllocationFunction<byte[], ValueLayout.OfByte> { }
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interface OfCharArray extends AllocationFunction<char[], ValueLayout.OfChar> { }
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interface OfShortArray extends AllocationFunction<short[], ValueLayout.OfShort> { }
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interface OfIntArray extends AllocationFunction<int[], ValueLayout.OfInt> { }
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interface OfFloatArray extends AllocationFunction<float[], ValueLayout.OfFloat> { }
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interface OfLongArray extends AllocationFunction<long[], ValueLayout.OfLong> { }
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interface OfDoubleArray extends AllocationFunction<double[], ValueLayout.OfDouble> { }
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}
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enum AllocationFactory {
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ARENA_BOUNDED(true, SegmentAllocator::newNativeArena),
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ARENA_UNBOUNDED(false, (size, session) -> SegmentAllocator.newNativeArena(session)),
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NATIVE_ALLOCATOR(false, (size, session) -> session),
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IMPLICIT_ALLOCATOR(false, (size, session) -> SegmentAllocator.implicitAllocator());
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private final boolean isBound;
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private final BiFunction<Long, MemorySession, SegmentAllocator> factory;
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AllocationFactory(boolean isBound, BiFunction<Long, MemorySession, SegmentAllocator> factory) {
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this.isBound = isBound;
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this.factory = factory;
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}
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SegmentAllocator allocator(long size, MemorySession session) {
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return factory.apply(size, session);
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}
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public boolean isBound() {
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return isBound;
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}
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}
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interface ToArrayHelper<T> {
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T array();
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T toArray(MemorySegment segment, ValueLayout layout);
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ToArrayHelper<byte[]> toByteArray = new ToArrayHelper<>() {
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@Override
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public byte[] array() {
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return new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
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}
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@Override
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public byte[] toArray(MemorySegment segment, ValueLayout layout) {
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ByteBuffer buffer = segment.asByteBuffer().order(layout.order());
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byte[] found = new byte[buffer.limit()];
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buffer.get(found);
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return found;
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}
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};
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ToArrayHelper<char[]> toCharArray = new ToArrayHelper<>() {
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@Override
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public char[] array() {
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return new char[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
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}
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@Override
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public char[] toArray(MemorySegment segment, ValueLayout layout) {
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CharBuffer buffer = segment.asByteBuffer().order(layout.order()).asCharBuffer();
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char[] found = new char[buffer.limit()];
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buffer.get(found);
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return found;
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}
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};
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ToArrayHelper<short[]> toShortArray = new ToArrayHelper<>() {
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@Override
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public short[] array() {
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return new short[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
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}
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@Override
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public short[] toArray(MemorySegment segment, ValueLayout layout) {
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ShortBuffer buffer = segment.asByteBuffer().order(layout.order()).asShortBuffer();
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short[] found = new short[buffer.limit()];
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buffer.get(found);
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return found;
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}
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};
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ToArrayHelper<int[]> toIntArray = new ToArrayHelper<>() {
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@Override
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public int[] array() {
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return new int[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
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}
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@Override
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public int[] toArray(MemorySegment segment, ValueLayout layout) {
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IntBuffer buffer = segment.asByteBuffer().order(layout.order()).asIntBuffer();
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int[] found = new int[buffer.limit()];
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buffer.get(found);
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return found;
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}
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};
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ToArrayHelper<float[]> toFloatArray = new ToArrayHelper<>() {
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@Override
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public float[] array() {
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return new float[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
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}
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@Override
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public float[] toArray(MemorySegment segment, ValueLayout layout) {
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FloatBuffer buffer = segment.asByteBuffer().order(layout.order()).asFloatBuffer();
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float[] found = new float[buffer.limit()];
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buffer.get(found);
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return found;
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}
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};
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ToArrayHelper<long[]> toLongArray = new ToArrayHelper<>() {
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@Override
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public long[] array() {
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return new long[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
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}
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@Override
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public long[] toArray(MemorySegment segment, ValueLayout layout) {
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LongBuffer buffer = segment.asByteBuffer().order(layout.order()).asLongBuffer();
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long[] found = new long[buffer.limit()];
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buffer.get(found);
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return found;
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}
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};
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ToArrayHelper<double[]> toDoubleArray = new ToArrayHelper<>() {
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@Override
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public double[] array() {
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return new double[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
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}
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@Override
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public double[] toArray(MemorySegment segment, ValueLayout layout) {
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DoubleBuffer buffer = segment.asByteBuffer().order(layout.order()).asDoubleBuffer();
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double[] found = new double[buffer.limit()];
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buffer.get(found);
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return found;
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}
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};
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ToArrayHelper<MemoryAddress[]> toAddressArray = new ToArrayHelper<>() {
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@Override
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public MemoryAddress[] array() {
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return switch ((int) ValueLayout.ADDRESS.byteSize()) {
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case 4 -> wrap(toIntArray.array());
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case 8 -> wrap(toLongArray.array());
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default -> throw new IllegalStateException("Cannot get here");
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};
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}
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@Override
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public MemoryAddress[] toArray(MemorySegment segment, ValueLayout layout) {
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return switch ((int)layout.byteSize()) {
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case 4 -> wrap(toIntArray.toArray(segment, layout));
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case 8 -> wrap(toLongArray.toArray(segment, layout));
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default -> throw new IllegalStateException("Cannot get here");
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};
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}
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private MemoryAddress[] wrap(int[] ints) {
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return IntStream.of(ints).mapToObj(MemoryAddress::ofLong).toArray(MemoryAddress[]::new);
|
|
}
|
|
|
|
private MemoryAddress[] wrap(long[] ints) {
|
|
return LongStream.of(ints).mapToObj(MemoryAddress::ofLong).toArray(MemoryAddress[]::new);
|
|
}
|
|
};
|
|
}
|
|
}
|